{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"AT34C02C-THDD-T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"AT34C02C-THDD-T","canonicalUrl":"https://icboms.com/microchip/AT34C02C-THDD-T","factsUrl":"https://icboms.com/api/mcp/products/AT34C02C-THDD-T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip AT34C02C-THDD-T, 2Kbit I²C EEPROM, 900 ns access time, 400 kHz clock, 2.5V to 5.5V supply, 256 x 8 organization, -40°C to 85°C, 8-TSSOP package.","salesMarkdown":"## 2Kbit I²C EEPROM with wide supply range The Microchip AT34C02C-THDD-T is a 2Kbit serial EEPROM with an I²C interface, organized as 256 x 8 bits. The 400 kHz clock frequency and 900 ns access time cover the read timing needs of most microcontroller buses. The 8-TSSOP package (4.40 mm width) is a compact surface-mount footprint suited for space-constrained PCBs in industrial control, telecom, and sensor modules. The 900 ns access time is the read-cycle ceiling from address to data valid. At 400 kHz I²C, the bus period is 2.5 µs, so the access fits within a single clock cycle with margin. This matters if you are back-to-back reading sequential bytes in a tight polling loop — the EEPROM will not stretch the clock beyond the standard timing budget. The 8-TSSOP package is a standard JEDEC footprint shared with many other 8-pin serial EEPROMs, so board layout reuse across alternate parts is straightforward.","metaTitle":"AT34C02C-THDD-T 2Kbit I²C EEPROM, 900 ns access, 8-TSSOP","metaDescription":"Microchip AT34C02C-THDD-T 2Kbit I²C EEPROM, 2.5V-5.5V supply, 400 kHz clock, 900 ns access, -40°C to 85°C, 8-TSSOP. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"Not applicable","productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Package":"Bulk","Technology":"EEPROM","Access Time":"900 ns","Memory Size":"2Kbit","Memory Type":"Non-Volatile","Memory Format":"EEPROM","Mounting Type":"Surface Mount","Package / Case":"8-TSSOP (0.173\\\", 4.40mm Width)","Clock Frequency":"400 kHz","lifecycle_stage":"eol_hot","Memory Interface":"I²C","Voltage - Supply":"2.5V ~ 5.5V","Memory Organization":"256 x 8","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"8-TSSOP","Write Cycle Time - Word, Page":"5ms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.34","priceTiers":[{"qty":875,"price":"$0.34000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/4ee043ca945940ef7f34808c9981b329.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/AT34C02C-THDD-T/alternatives.json"},"ai":{"faq":[{"question":"Is AT34C02C-THDD-T compatible with 3.3V systems?","answer":"The I²C interface thresholds scale with VCC, so at 3.3V the input low/high levels meet standard 3.3V logic."},{"question":"What is the write cycle endurance of AT34C02C-THDD-T?","answer":"The evidence does not list a specific endurance figure. Typical serial EEPROMs in this class are rated for 1 million write cycles per byte; verify the exact specification from the full datasheet."},{"question":"AT34C02C-THDD-T vs AT24C02: can I use them interchangeably?","answer":"Both are 2Kbit I²C EEPROMs with 256 x 8 organization and the same 5 ms write-cycle time. The AT34C02C-THDD-T operates from 2.5V to 5.5V, while the AT24C02 family often specifies a 1.7V minimum. Check the supply rail in your design — if you need 1.8V compatibility, the AT24C02 is the better fit; at 3.3V or 5V, the AT34C02C-THDD-T is a drop-in replacement with the same 8-TSSOP footprint."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/AT34C02C-THDD-T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/AT34C02C-THDD-T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}